Centro de Documentacion de Fundación MAPFRE - The Effect of sustained spinal load on intra-abdominal pressure and EMG characteristics of trunk muscles

Notas: Sumario: Foorteen young male students and 12 young female students held 9,07 kg and 6,8 kg, respectively, at their three-quarters horizontal reach distance in upright and stooping postures for a period of 5 min. The EMGs were processed in magnitude and time domains to determine muscle fatigue. Through the data obtained it was seen that the intra-abdominal pressure did not follow or reflect either the spinal load or the muscle activity. Based on the arguments presented, it was concluded that the intra-abdominal pressure does not appear to have a role of relieving the spine of some of its load. Instead, it is suggested that it is a dependent variable manifesting itself when mechanisms for spinal stability are evoked to overcome large voluntary and inertial loadsRegistros relacionados: En: Ergonomics. - London [etc.]. - Vol. 40, nº 12, December 1997 ; p. 1312-1334Materia / lugar / evento: Ergonomía Columna vertebral Carga de materiales Electromiografía Presión Fatiga Métodos experimentales Otras clasificaciones: 875